Grammar fixes

Author: rgbkrk

docs/starting/which-python.rst

@@ -90,11 +90,11 @@ Currently Jython supports up to Python 2.5. [#jython_ver]_
 IronPython
 ----------
 
-`IronPython <http://ironpython.net/>`_  is an implementation of Python for .NET
+`IronPython <http://ironpython.net/>`_  is an implementation of Python for the .NET
 framework. It can use both Python and .NET framework libraries, and can also
 expose Python code to other .NET languages.
 
-`Python Tools for Visual Studio <http://ironpython.net/tools/>`_ integrate
+`Python Tools for Visual Studio <http://ironpython.net/tools/>`_ integrates
 IronPython directly in to the Visual Studio development environment, making it
 an ideal choice for Windows developers.